Drug DUI in PA: Pills and Marijuana | Nicholas A. Frisk III

Last updated October 4, 2026.

Drug-related DUI is one of the charges people find hardest to believe, because the driving often looked normal and the drug was taken legally. Pennsylvania's statute is written to cover exactly those cases. This page explains how, using the text of the law as it stands today, and what the case looks like in Lawrence County. For the broader defense picture, see the main DUI defense page.

How does a drug DUI case move through Lawrence County?

A drug DUI follows the same court path as an alcohol DUI, but nearly everything turns on a blood sample and a lab report.

The stop and the request for blood. Drivers are deemed to have consented to a chemical test of breath or blood when an officer has reasonable grounds to suspect DUI (75 Pa.C.S. 1547(a)), and only blood shows drugs. Whether that draw needed a warrant is its own question, covered in whether police need a warrant to draw blood for a DUI.
Release and the complaint. When the most serious charge is a misdemeanor, Rule 519(B) usually has the officer release the person, file the complaint within 5 days and let a summons follow. Every stage after an arrest is laid out in what happens after a DUI arrest in Lawrence County.
The preliminary hearing. Lawrence County holds preliminary hearings at its Central Court, 202 Milton Street, New Castle, next to the county jail, on Tuesdays, Wednesdays and Thursdays at 9:30 a.m. The Public Defender asks anyone seeking its help to apply at least two weeks before. What the judge decides there is explained in what happens at a preliminary hearing in Lawrence County.
The Court of Common Pleas. A case held for court moves to the Courthouse at 430 Court Street, New Castle. The Public Defender describes an arraignment, which can be waived, then a Call of Trial about a month later. The building and its offices are described in what to expect at the Lawrence County Courthouse.
The lab file and pretrial motions. On request, the Commonwealth must disclose the results or reports of scientific tests in its possession (Pa.R.Crim.P. 573(B)(1)(e)). A challenge to the blood draw or the result normally goes in the omnibus pretrial motion, due within 30 days after arraignment (Rule 579(A)).
Evaluation, then ARD, plea or trial. Before ARD or sentencing, a Court Reporting Network evaluation is required (3807(b)(1)(ii), 3814(1)); the Public Defender lists its cost at $60. What it involves is on the page about the CRN evaluation and alcohol highway safety school.
PennDOT. After a conviction, PennDOT suspends the license once it receives the certified record (3804(e)(1)).

What does Pennsylvania's drug DUI law actually say?

Section 3802(d) of the Vehicle Code lists four separate ways to commit a drug DUI. The prosecution needs only one.

The four drug DUI offenses in 75 Pa.C.S. 3802(d)
Subsection	What it prohibits	Proof of impairment needed?
(d)(1)	Any amount in the blood of a Schedule I drug, a Schedule II or III drug "which has not been medically prescribed for the individual," or a metabolite of either	No
(d)(2)	Being under the influence of a drug or drugs "to a degree which impairs" the ability to drive safely	Yes
(d)(3)	The combined influence of alcohol and a drug to that same degree	Yes
(d)(4)	Being under the influence of a solvent or noxious substance in violation of 18 Pa.C.S. 7303	Under that statute

Paragraph (d)(1) is the one that surprises people. It does not require proof that you were impaired. It speaks of "any amount" of a listed drug or of a metabolite, the substance the body breaks a drug down into. The only floor is the testing threshold described further down this page.

The schedules come from Pennsylvania's Controlled Substance, Drug, Device and Cosmetic Act. Schedule I includes heroin, marijuana and tetrahydrocannabinols. Schedule II includes fentanyl, methadone, amphetamine and methylphenidate. Schedule III includes buprenorphine and ketamine. Drugs in Schedules IV and V are not named in paragraph (d)(1) at all, so for them the Commonwealth has to prove impairment under (d)(2) or (d)(3).

Can I be charged for a prescription I take as directed?

Yes, but usually not under the "any amount" rule. Paragraph (d)(1)(ii) covers Schedule II and III drugs only when they were not prescribed to you, so a valid prescription takes that paragraph off the table. Paragraph (d)(2) has no such exception: if a prescribed drug, even one taken exactly as directed, impaired your ability to drive safely, that is a DUI, and the same goes for a drug combined with alcohol under (d)(3).

Section 3810 closes the door on the obvious argument: being "legally entitled to use alcohol or controlled substances is not a defense" to a DUI charge. A prescription can still matter as evidence, for example on whether a dose was therapeutic.

What about medical marijuana?

The Controlled Substance Act lists marijuana ("marihuana" in the statute) in Schedule I. Because paragraph (d)(1)(i) covers any amount of a Schedule I substance or its metabolite, and its prescription exception applies only to Schedule II and III drugs, the statute's text contains no carve-out for medical marijuana patients. Section 3810 applies here too.

The legislature has considered changing this. House Bill 878 of 2025 would amend the definitions, section 3802 and section 3810. As of October 4, 2026, the General Assembly's bill page still shows its last action as a referral to the House Transportation Committee on March 11, 2025. It is not law, and this page will be updated if that changes.

How is a drug DUI proven?

Usually with a blood test, which in Pennsylvania must be performed by a clinical laboratory licensed and approved by the Department of Health, or by a Pennsylvania State Police criminal laboratory (1547(c)(2)). For Schedule I drugs and unprescribed Schedule II or III drugs, the Department of Health sets minimum levels that must be present before a result is admissible in a (d)(1), (2) or (3) prosecution (1547(c)(4)).

The Department explains that those minimums are limits of quantitation, the lowest concentration a lab can reliably measure, and that each lab's limits depend on its equipment and procedures. That makes the lab work the center of most drug DUI cases: how and when the blood was drawn, how it was stored, what the lab tested for, and whether the number meets the threshold.

Unlike the alcohol tiers, which measure blood alcohol within two hours after driving, paragraph (d) contains no two-hour language. In (d)(2) and (d)(3) cases the officer's observations also matter, because impairment has to be proven. The handheld device used at the roadside is a different thing, covered in roadside breath test versus the chemical test.

What are the penalties for a drug DUI?

Every drug DUI under 3802(d) is sentenced at the highest tier, the same tier as a blood alcohol level of 0.16% or more (3804(c)).

Mandatory minimums for a drug DUI (75 Pa.C.S. 3803, 3804(c), 3804(e))
Offense	Minimum jail	Fine	Grade	Suspension after conviction
First	72 consecutive hours	$1,000 to $5,000	Misdemeanor, up to 6 months	12 months
Second	90 days	At least $1,500	First-degree misdemeanor	18 months
Third	1 year	At least $2,500	Third-degree felony	18 months
Fourth or later	1 year	At least $2,500	Second-degree felony	18 months

First and second offenses also require alcohol highway safety school, and every offense carries any treatment ordered after an assessment. The grades come from 3803(b)(2), (4) and (4.1), and the suspensions from 3804(e)(2); the no-suspension rule for some first offenses applies only to 3802(a) cases (3804(e)(2)(iii)). Every tier side by side with the alcohol cases is in the Pennsylvania DUI penalties chart.

What happens to my license after a drug DUI?

Getting the license back requires an ignition interlock. Under the version of 75 Pa.C.S. 3805 in force today, the exception is limited to people facing the general impairment penalties of 3804(a)(1), or an ARD suspension, with no prior offense. A drug DUI is sentenced under 3804(c), so PennDOT restores driving only on an ignition interlock restricted license, for one year. PennDOT's eligibility chart allows an ignition interlock limited license as soon as the suspension notice arrives on a first offense under 3802(d), and after 9 months of an 18-month suspension on a later one. PennDOT puts the average interlock lease at $900 to $1,300 a year.

A change is coming. Act 36 of 2026, signed on July 20, 2026, replaces the limited license and the restricted license with a single ignition interlock driver's license. Those changes take effect 16 months after signing, in November 2027.

Is ARD available for a drug DUI?

It can be. The DUI ARD statute does not exclude drug cases; it bars ARD for a DUI or ARD within the prior 10 years (with one narrow exception), a crash that killed or seriously injured someone else, or a passenger under 14 (3807(a)(2)). Drug possession charges filed with a DUI follow their own rules, covered in possession versus possession with intent to deliver. A drug DUI carries the longer ARD suspension, 60 days (3807(d)(3)(iv)), and the full scale is on the page about how long ARD suspends your license. The local program and its costs are explained in how to get ARD in Lawrence County.

What changes the answer?

These are the facts that move a drug DUI case, each with the rule behind it:

The schedule of the drug. Schedule I drugs are covered in any amount; Schedule II and III drugs only if not prescribed to you; Schedule IV and V drugs only through proof of impairment (3802(d)(1), (2)).
Whose prescription it was. The (d)(1)(ii) exception covers a drug "medically prescribed for the individual," so a pill prescribed to a spouse or friend does not qualify.
Whether impairment can be shown. Under (d)(2) and (d)(3), the Commonwealth must prove the drug impaired your ability to drive safely.
The lab number. For a Schedule I or unprescribed Schedule II or III drug, a result below the Department of Health's minimum level is not admissible in a (d)(1), (2) or (3) prosecution (1547(c)(4)).
How the blood was obtained. A draw without a warrant needs voluntary consent or another exception, which a suppression motion can test (Pa.R.Crim.P. 581).
Your history. A DUI within 10 years makes the new case a second offense (3806). A completed ARD within 10 years means a charge of DUI following diversion, which for a drug case is a first-degree misdemeanor with at least 90 days (3803(c)(2), 3804(c)(2)), explained in DUI following diversion under Act 58.
A child in the car. A passenger under 18 makes even a first offense a first-degree misdemeanor, with an added fine of at least $1,000 and 100 hours of community service (3803(b)(5), 3804(c.1)(1)).

A worked example

For example, take a hypothetical driver (not a real case) who holds a Pennsylvania medical marijuana card, has no prior DUI or ARD, and is stopped in Ellwood City. She agrees to a blood test, and the lab reports a marijuana metabolite above the Department of Health's minimum level.

Marijuana is in Schedule I, so the result alone supports a charge under 3802(d)(1)(i) and (iii), with no need to prove she was impaired. Her card is not a defense (3810). On a first-offense conviction, the statute requires at least 72 consecutive hours of imprisonment, a fine of $1,000 to $5,000, safety school and any treatment ordered after the assessments (3804(c)(1)). PennDOT then suspends her license for 12 months (3804(e)(2)(i)), and she drives again only with an interlock.

ARD remains possible, with a 60-day suspension (3807(d)(3)(iv)). If her blood had shown only a Schedule II medication prescribed to her, (d)(1) would not apply at all, and the Commonwealth would have to prove impairment under (d)(2).

Common mistakes in drug DUI cases

Treating a card or prescription as a defense. Section 3810 rules that out.
Saying "I wasn't high." Under (d)(1), impairment is not an element.
Taking someone else's pills. A Schedule II or III drug prescribed to another person falls under (d)(1)(ii).
Adding a drink. Alcohol plus a drug is its own offense under (d)(3).
Ignoring a PennDOT letter. A refusal suspension notice can arrive while the criminal case is open, and the appeal window runs from its mailing date, as explained in appealing a PennDOT license suspension.
Driving before the suspension ends. Driving during a DUI-related suspension carries mandatory jail of its own (75 Pa.C.S. 1543(b)), covered in driving while suspended for a DUI.

What to do this week

Gather your prescription records: the pharmacy label shows whom the drug was prescribed for, which decides whether (d)(1)(ii) applies.
Keep every paper from the arrest, including any form you were read or signed about the blood test.
Ask for the test results in writing; they must be made available to you or your attorney on request (1547(g)).
Look up the case on the UJS Portal and note the preliminary hearing date at Central Court.
If you may qualify for the Public Defender, apply at least two weeks before that hearing.
Open every PennDOT letter the day it arrives and write down its mailing date.
Do not drive while suspended, or after taking anything that affects you.

Frequently asked questions

Can I get a DUI for an over-the-counter medicine?

Yes, if it impairs you. Paragraph (d)(2) speaks of "a drug or combination of drugs," not only controlled substances, and for such a drug impairment is what has to be proven.

How long after using marijuana can I be charged?

The statute sets no time limit. Paragraph (d)(1) covers any amount of a Schedule I drug or its metabolite, and the only floor is the minimum level the Department of Health sets for an admissible result (1547(c)(4)).

Can I refuse the blood test?

You can, but a refusal brings a PennDOT suspension of 12 months, or 18 months with an earlier refusal or DUI sentence, and the refusal can be used as evidence (1547(b)(1), (e)).

Does a drug DUI count against me if I am later arrested for an alcohol DUI?

Yes. A prior offense is any DUI conviction under section 3802, alcohol or drug, for which sentence was imposed before sentencing on the new case (3806(a)). How a second case is graded and sentenced is covered in what happens on a second DUI in Pennsylvania.

What if police also found drugs or a pipe in the car?

Those are separate charges under the drug laws, with their own elements, evidence and penalties. The paraphernalia charge is explained in whether possessing drug paraphernalia is a crime in Pennsylvania.

If you were charged with a drug-related DUI in Ellwood City, Lawrence County or anywhere in Western Pennsylvania, I can go through the blood evidence and the options with you. You work directly with me, and the first consultation is always free and confidential.

Can I get a DUI in Pennsylvania for prescription pills or medical marijuana?